Whatwould u times by 9 to get 99?

Mathematics

1 answer:

Aleonysh [2.5K]4 years ago

6 0

The answer would be 11.

You might be interested in

Please help fast lol, ty will mark brainliest

Maru [420]

None of them are equivalent because
= 3(-2)+7
= -6 +7
= 1

5 0

3 years ago

Read 2 more answers

Help me on this one please !

Semenov [28]

Look at my work below I plugged it in multiple times and tried plugging in A. D is the only answer that is probable

6 0

4 years ago

Here is a tunnel for a toy train.

jonny [76]

The <em>total</em> area of all six faces of the tunnel is $614.197\pi$ square centimeters.

<h2>Procedure - Surface area of a tunnel for a toy train</h2>

The surface area of the solid ( $A$ ) used to represent the tunnel for a toy train is the sum of its six faces (two <em>semicircular</em> sections, inner <em>semicircular</em> arc section, outer <em>semicircular</em> arc section, two rectangles).

<h3>Determination of the surface area of the tunnel based on information of the diagram</h3>

We calculate the surface area as following:

$A = 2\cdot \frac{\pi}{2} \cdot [(10\,cm)^{2}-(8\,cm)^{2}] + \pi\cdot (8\,cm)\cdot (30\,cm) + \pi\cdot (10\,cm)\cdot (30\,cm) + 2\cdot (2\,cm)\cdot (30\,cm)$